Process for producing colors on textile and other materials.



curses shirts serum cuties JOHN CHESTER, F SALTAIRE, ENGLAND.

PROCESS FOR PRODUCING COLORS ON TEXTILE AND OTHER MATERIALS,

t emes,

Ne Drawing.

To all whom it may concem: I

Be it known that I, JOHN CHESTER, a. subject of the King of Great Britain, r

siding at Moor-head Cottage, Salteire, Yorkshire, England, have invented certain new and useful Improvements in a Process for Producing Colors on l, extile and other Ma- -terrials; and I; do hereby declare the folothers skilledin the art'to which it 111 the process.

Those processes -listing. as e basis the- I treatment of the goods-to be dyed *orcolored- Ensteed of using lowing tobe a full,- clear, and exact description of the invention,fsuch as will enable appertains to make. and use the some. This invention relates to a process for producing colors o i textile and other mate rials having an animal origin, such sis wool, leather, feathers,- horn end the like, the object being to produce the colors omioa-lly and with as few steps" as possible by means oiinitrou's acid in e first hath and then by metallic suits in e, subsequent loath have only produced co ers. of e t'erj fugitive. nature segierute 'heths as ebove of which thefirst bath is used cold, I pro' duce permanent colors on the materials in question by combining the suhstehces producing the nitrous acid and the metallic salt in a. single bath and by using the teeth at e high temperature,

' The following is an example of how the.

invention may be carried outz-- Wool is treated in e heth'composed ofh- Sodium nitrite, 5% on weight of the me -teriel to he dyed,

Specification of Iietters Patent" the sodium nitrite and Patented use 2 56, ifiil'to Application filed November 24, 1915.. Serial No; 63,3G5

Commercial sulfuricjacid, of the material he dyed,

Sodium bichromate, 2% the material to be dyed, the Whole being dissolved in a suitable quantity of water. The material is put into the both when the letter is cold. The bath. brought to the boil. color is produced. As

on" weight of ln'this case a. brown in previous processes producing colors oh by the use of nitrous acid and 1 zr metallic salt capebleof generating a color,

combining the nitrous acid and the metallic salt in 3, single bath with which the ma rial is treated at at high temperature.

containing nitrous acid and soluble bichroinete at a high temperature.

produciugeolors QD tQX: tile aud'othcr lIlSitQI'lillS-llfifi'lhg' an unimel 3. A process of origin byztreating the material with a bath containing sodium nitrite, sulfuric acid and soluble bichromate at a high temperature [In testimony whereof, I affix my signature.

JOHN asserts-.-

is gradually the sulfuric acid i11- materials having on em- I on weight process of producing colors on teX tile end other materials having an animal origin icy treating the material with a bath 

